... request achieve the best polishing effect 1,2,3 1,when the grinding thickness is 4mm-8mm, speed: 3m/ ... thickness is 10mm-12m, speed: 2.3m/min 3,when the grinding thickness is 15mm-19mm, speed: 1.2m ... Main Structure: 1.Flange adopt double Ball strew and straight line guiding rail, resetting well. 2.Grinding head planker adopt ...